在红树林蓝碳森林中对风的弹性很高
David Reed1, Selena Chavez2,3, Edward Castañeda-Moya3
1Yale School of the Environment, Yale University, New Haven, Connecticut, USA.
Global change biology
|March 19, 2025
概括
红树林森林很快从风中恢复,叶面积指数在一年内恢复到正常水平. 尽管最初的碳回收债务,这些重要的沿海生态系统仍然是重要的碳汇.
科学领域:
- 生态生态学 生态生态学
- 气候科学 气候科学
- 林业林业 林业 林业 林业
背景情况:
- 红树林森林表现出对自然干扰的弹性,这是由于物种特定的适应.
- 这些生态系统对全球碳循环至关重要,对碳埋葬和沉积作出了重大贡献.
- 了解风对红树林结构和功能的影响对于预测它们作为碳汇的作用至关重要.
研究的目的:
- 评估风对红树林结构和功能的影响.
- 测量大风后红树林生态系统恢复到干扰前条件的程度.
- 用叶面积指数 (LAI) 和二氧化碳 (CO2) 净生态系统交换 (NEE) 来量化"恢复债务".
主要方法:
- 利用来自佛罗里达州沿海埃弗格莱德斯两处沿海红树林的旋转协变数据.
- 测量叶面积指数 (LAI) 和生态系统二氧化碳净交换 (NEE),以评估生态系统的恢复.
- 计算了从扰乱前条件的累积偏差来确定回收债务.
主要成果:
- 埃弗格莱德斯红树林的叶面积指数 (LAI) 在风后的一年内恢复到扰乱前的水平.
- 生态系统的呼吸和最大的光合作用速度需要更长的恢复时间.
- 在高层森林中观察到178g C m-2的初始回收债务,对灌木林的影响有限.
结论:
- 红树林森林的快速树冠恢复表明,尽管强度高的风暴影响,它们仍在继续作为重要的碳汇.
- 恢复债务,代表生态系统结构和功能的赤字,在景观规模上在四年内在很大程度上得到了回收.
- 亚热带红树林表现出强大的恢复能力,保持其在碳封存中的作用.
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